With any Manitou post mount, take the time to make sure you are using the longest allen screws that will not bottom out in the threads. Just thread the screw in there with nothing attached and see how far it will thread in. If you can use a longer screw, do it even if it means a trip to the hardware store to get them.
The forums are littered with people that torqued their disc brake caliper mounting screws to the brake manufacturer's specs (as Manitou recommends) and proceeded to strip the threads in the fork lowers.
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